kellogg



(No Model.) 2 Sheets-Sheet 1 W. L. KELL GG. STAVE JOINTER.

No. 565,859. Patented A5911, 1896.

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STAVE JOINTER.

Patented Aug. 5 1 1, 1896-;

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UNITED STATES PATENT ()EEICE.

WILLIAM L. KELLOGG, OF INDIANAPOLIS, INDIANA.

STAVE-JOINTER.

SPECIFICATION forming part of Letters Patent No. 565,859, dated August 11, 1896.

Application filed January 20, 1896- fierial No. 576,153. (No model.)

To all whom it may concern: 7

Be it known that I, WILLIAM L. KELLOGG,

a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Stave-Jointer, of which the following is a specification.

My invention relates a to machine for j ointing the edges of barrel-staves.

The object of my invention is to provide a machine adapted to receive barrel-staves of varying widths, which have been previously bent into the desired shape, and to trim the edges of said staves, so that when the staves are formed into a barrel their edges will be radial to the center of said barrel.

The accompanying drawings illustrate my invention.

Figure 1 is a side elevation of my machine. Fig. 2 is an end elevation thereof. Fig. 3 is a fragmentary section, on an enlarged scale, on line 3 3 of Fig. 1. Fig. 4 is a plan, on an enlarged scale, of a portion of the ball-bearing provided for the cutter-shafts; and Fig. 5 is a centrallongitudinal section of the entire bearing on line 5 5 of Fig. 4:-

111 the drawings, 6 indicates the main base portion of the machine, to each of two opposite sides of which is bolted a bracket 7, the upper surfaces of said brackets lying flush with the upper surface of the base. Abearing 9 is secured to the outer end of each bracket 7, and mounted so as to turn therein is a shaft 10, said shaft being provided throughout its length with a keyway 11. Mounted on shaft 10, so as to rotate therewith, but so as to slide freely thereon, is the stave carriage 12. Stave-carriage 12 consists, essentially, of the bearings 13, mounted on shaft 10 and provided with keys 14, which are adapted to slide freely in keyway 11, and the side plates 15, which are secured to an upwardly-projecting lug 16, carried by each bearing 13. The upper end corners of plates 15 are beveled, as at 17, to form a bearing upon which the ends of a stave 18 may rest, and each plate 15 is provided at about the middle of its upper edge with an upward projection, to which is adjustably secured a block 19, said blocks being adapted to be brought up into a position to engage the under surface of the stave and be held in position by bolts 20, the whole arrangement being such that the distance between the center of shaft 10 and the stave will equal the radius of the barrel of which said stave is to form a part. At the rear end of the carriage plates 15 are extended beyond bearing 13, and between the plates is mounted a casting 21, which is provided with a forwardly and downwardly projecting arm or jaw 22, said jaw lying over the beveled rear ends of plates 15, sufficient space being left between the beveled edges of the plates and the under surface of the jaw to receive one end of stave 1S. Jaw 22 may be made adjustable to suit staves of various thicknesses, if so desired.

Pivoted between the forward ends of plates 15 is a lever 23, to which is pivotally secured a clamping-jaw 24, said jaw extending over the forward beveled edges of plates 15 in a position to engage with the upper surface of the forward end of stave 18. Jaw 24 is held in engagement with stave 18 by means of the sliding spring'operated catch 25, carried by lever 23 and engaging with an adjustable block 26, secured between the forward ends of plates 15, said catch being withdrawn from engagement with block 26 by meams of a sliding finger-piece 27, mounted on the forward portion of the lever.

Keyedto the forward end of shaft 10, outside of bearing 13, is a short lever 28, which carries near its outer end a series of pawls 29, which are adapted to alternately engage with a series of teeth carried by a segment 30,which is secured to the outer end of the forward bracket 7, and thereby hold shaft 10and carriage 12 in any desired position of angular adj ustment.

knives 36 may be moved longitudinally of the knife-head to adapt the machine for staves for different sizes of barrels, and may also be adjusted transversely of the knife-head to compensate for wear and grinding.

Shafts 34 are so mounted in standards 31 that the cylindrical path described by the cutting edges of knives 36 will lie tangent to a plane in which the center of shaft 10 lies. In other words, the edges of a stave carried bv carriage 12 when brought into contact with one or the other of the sets of knives will be jointed on a line drawn through the center of shaft 10. To the upper end of each shaft 34 is secured a pulley 40, by which the said shafts may be rotated in the directions indicated by the arrows thereon, said rotation being such that one side or the other of the stave may be jointed at either the backward or forward movement of the stave-carriage.

For the purpose of lessening the friction due to the weight of shaft 34, together with its knife-head and knives, I mount a ball-bearing of peculiar construction between the lower end of the knife-head and bearing 32 of standard 31. Standards 31 are made, preferably, of cast-iron and one-half of bearings 32 and 33 are formed integral therewith, the remainder of each bearing being formed by a cap in the usual well-known manner. It would be practically impossible to form in the opening of such a bearing screw-threads of sufficient fineness and strength to receive the threaded portion of a ball cup or cone, and to overcome this difficulty I form in the upper end of bearin g 32, preferably by molding, an annular enlargement 41, and in this enlargement rests an internally-screw-threaded ring 42, said ring being split at 43 and its outer circumference engaged by a set-screw 44, mounted in suitable threads formed in bearing 32. Mounted in ring 42, by means of suitable screw-threads, is a ball-cup 45, through which shaft 34 passes loosely, and secured to shaft 34, so as to revolve therewith just above cup 45, is a similar cup 46, and between these two cups the balls 47 are inserted in the usual well-known manner.

In operation pulleys 40 are connected by suitable belts to any source of power, and each knife-head is rotated in the direction indi:

cated by the arrows. Stave-carriage 12 is then drawn along shaft 10 into the position indicated in Fig. 1, and the stave 18, pre viously bent to the bilge of the barrel and. provided with a clamp 48, is slipped into place on carriage 12 in the following manner:

Catch 25 is released, lever 23 is raised slightly, and jaw 24 is thrown down into the position indicated by dotted lines in 1. Clamp 48 is then introduced between plates 15. The

rear end of stave 18 is placed upon the beveled portions 17 at the rear of the carriage and slipped along said portions and under jaw 22. The forward end of the stave is then brought to rest upon the beveled portions 17 at the forward end of the carriage, the blocks 19 coming, at the same time, into engagement with and supporting the middle of the stave.

Jaw 24 is then thrown back and brought into engagement with the forward end of the stave by forcing lever 23 downward until catch 25 takes under block 26. The operator next grasps the end of lever 28, at the same time releasing pawls 29 from engagement with segment 30, and, by moving said lever down, turns shaft 10 and carriage 12 through an angle sufficient to bring the left-hand edge of the stave into a position to be engaged by the left-hand set of revolving knives 36, when pawls 29 are released and one or the other of said pawls comes into engagement with segment 30, and thus holds the carriage in an gular position. The operator then grasps lever 23 and slides the carriage along shaft 10 until the entire length of the stave has been pushed past the knives, thus jointing one edge of the stave. Lever 28 is then raised so as to bring the other edge of stave 18 into position to be operated upon by the righthand set of knives, and, after being secured in position by one of the pawls 29, the carriage is drawn forward to the starting-point, thus jointing the other edge of the stave. Catch 25 is then released, jaw 24 thrown forward, the stave removed, and the operation repeated.

The V-shaped opening between the two knife-heads is sufficiently wide to allow staves of considerable width to be jointed, but all of the staves of whatever width are jointed so that the jointed edges, when placed together to form a barrel, will fit accurately together on lines radial to the center of said barrel.

Barrels of various sizes are made, and to adapt the machine to operate upon the various sizes of staves used I construct several stave-carriages similar to the one shown, but of different dimensions, and any one of these carriages may be placed upon shaft 10, and knives 26 may be adjusted along the knifehead so as to be in position to work upon the particular size of stave in use.

It is quite important, in order to give sufficient strength and range to the machine, that the knives 36 be shorter than the knife-head to which they are secured and that said knives be adjustable longitudinally of said head, because if the knives were as long .as the knife-head in the machine shown it would then be impossible to make a stave for a large barrel as narrow as a stave for a small barrel, owing to the factthat a greater amount of angular adjustment of the carriage is necessary to form a narrow stave for a large barrel and such angular adjustment could not be made without bringing the carriage, which must be of reasonable thickness, into engagement with the lower corners of the knives. By making the knives shorter than the knifehead and adjustable thereon the difficulty is overcome, because by moving the lower edge of the knives upward along the knife-head they are, at the same time, drawn away from the vertical center of the machine.

To adjust the ball-bearing for shaft 34, set screw 44 is loosened and ball-cup 45 is turned relatively to ring 42, and then set-screw 44 is tightened against the periphery of ring 42, thereby clamping ring 42 around the screwthreads formed on cup 45 and holding said cup in position.

I claim as my invention 1. In a stave-jointer of the class described, a stave-carriage consisting of a pair of bearings adapted to receive the main shaft, a pair of side plates secured thereto, andconnecting, said bearings, the upper corners of said side plates being adapted to receive and support a stave near its opposite ends, the bearing blocks arranged between the ends of the side plates and adj ustable thereon, the fixed clamping-j aw secured between the side plates at one end thereof, the lever pivoted to the side plates at the opposite ends thereof, the clamping-jaw pivoted to said lever, and arranged to engage the stave near one of its ends, and means for securing said lever in position, substantially as set forth.

2. In a stave-jointer of the class described, a bearing for the cutter-shaft thereof, consisting of the internally-screw-threaded split ring mounted in a recess formed in a suitable standard, a ball-cup provided with suitable screw-threads mounted in said ring and provided-with an opening through which the shaft may freely pass, a ball-cup carried by said shaft and rotated therewith, a series of balls mounted between said ball-cups, and means carried by the standard for clamping the split ring about the first-mentioned ball-cup, substantially as set forth.

3. In a stave-jointer of the class described, a stave-carriage consisting of bearings adapted to receive the main shaft, a pair of side plates secured thereto and projecting above said bearings, the arrangement being such that a stave, which has been previously bent and. provided with a suitable clamp serving to hold the stave in its bent position, may be supported upon the upper edges of said side plates and the said clamp may be received between the said plates, and means for holding the stave upon the carriage, substantially as described.

4. In a stave-jointer, the combination with the main shaft rotatively adjustable on the base-frame, a carriage mounted on said shaft so as to turn therewith andso as to slide 1ongitudinally thereon, said carriage being provided with a pair of upward1yprojecting plates upon the upper edges of which a previously-bent stave, provided with a suitable clamp serving to hold the stave in its bent position, may rest, and between which the said clamp may be received, a pair of rotating cutters mounted in bearings on the base-frame on opposite sides of the main shaft in such a position that the cylindrical path described by each of said cutters shall lie tangent to a plane in which the center of the main shaft shall lie, substantially as described.

WILLIAM L. KELLOGG.

WVitnesses:

A. M. HOOD, CARL KBEIS. 

